LOL
It's actually the other way around. Carbs, can cause you to pack on more fats faster than fats can. First off, there's the carb providing high levels of energy which when not used, is converted to fats for your body to store as energy to be used in the future. Then fat, is actually sorta like a catalyst to losing fat..

GO figure. It's a weird world we're living in.

I don't want to be a b|tch but here's a set I've compiled from reading stories and biographies of very strong, strongmen including Sandow, our favorite old time strongman.

"The basis to getting stronger and bigger, is to always lift bigger and heavier.
If you can't lift heavier, lift more reps.
If you aren't hungry the entire day, you're not training hard enough."

20KG x 5 x 10? I think that's overkill on the reps.
Tricep kickbacks? You'll probably hit 50LBS max, and then gravity+bad leverage+joint pain will get to you.

You should increase the weights if you ask me. Think about it this way;

20KG x 5 x 10 = 1000KG

So you lift a total of 1000KG in that session.

Or how about?

20KG x 10 = 200KG
40KG x 8 = 320KG
60KG x 3 x 3 = 540KG

1060KG in that session, more weights, less time, less repetitions. That way, you can save your energy for other stuff. (This is a helluva rough calculation, but yeah....)
Don't be afraid of adding weights, getting more repetitions if you can't add any more weights. Playing safe by keeping in the light weights, will never get you anywhere. You're beginning, you've got to lift heavy weights, to build that solid foundation.

Actually.......it won't really do much purpose.....
20Kg's just too darned light to inflict any effort during squatting.

Well.......learn the pistols, overhead squats, bulgarian squats then since you've got no heavier weights. Or MAKE A SANDBAG!

No you see, this is something you've got to understand.
The tool to achieving something, shouldn't just be one

For example, to play music we have the drums. But some people use other means, like the congo, djembe, "kompang" and even those Chinese traditional drums. They all make music.

Likewise, a barbell, a dumbbell, a kettlebell, a sandbag, resistance bands, bodyweight training, tires, digging, chopping. These are all forms of tools to exercise, workout, train (whatever it is you guys call it nowadays)

When I first began, I wasn't exposed to these sort of training. All I knew was barbells and good lord what I've missed. Now I'm STILL stuck to barbells because of the sport I'm involved in, but having incorporated numerous other training methods and principles, my workload capacity has increased, strength and alertness as well as body reaction times have all increased. Who'd known, juggling balls makes you much quicker at reaction too.

That stinks bro.
Well, get well soon and then start lifting again.